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| Message flow as a web service provider? |
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| JYama |
 Posted: Thu Sep 28, 2006 9:49 pm Post subject: Message flow as a web service provider? |
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Master
Joined: 27 Mar 2002
Posts: 281
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Hi all,
I'd like to know about how a meeage flow works as a service provider through SOAP over JMS.
Assume that a BPEL engine(ex. WPS) invokes a service provided by WMB and this service is provided by one message flow.
How can this service (message flow) receive the SOAP request over JMS? (JMSInput node with moderate MRM?)
How can this service (mesage flow) return the result over JMS to the client? (how the result can correlate with the request message?)
In my environment, a couple of message flows are successfully working through SOAP/HTTP.
But I'm not familiar with SOAP/JMS.
Is there anybody who is familiar with this issue?
Thanks in advance.
J |
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| fjb_saper |
| Posted: Fri Sep 29, 2006 2:12 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Soap over JMS using the MQ provider works like just any other message over MQ. Using a different JMS provider you need to make sure you have the provider's jars available on the classpath and can define the context and JNDI to retrieve the qcf.
If you need to produce a wsdl you want to look at adding a "catalog" to your message set.
The advantage of soap over JMS is that it is asynchronous [and possibly way faster than over http]...
Enjoy 
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| JYama |
| Posted: Sun Oct 01, 2006 4:31 pm Post subject: |
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Master
Joined: 27 Mar 2002
Posts: 281
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Thanks for your information, fjb_saper.
Now I'm clear with SOAP over JMS on WMB.
Anyway, correlation between a service call and its result depends on SOAP spec., right?
In SOAP over http call, we can correlate it via OutputLocalEnvironment tree.
What about a case in SOAP over JMS?
Is it similiar with MQ?
Appreciate your help.
J |
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| fjb_saper |
| Posted: Mon Oct 02, 2006 8:00 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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You correlate with the JMSReplyTo destination and the correlation Id on the message(MQMD). In V6 use the reply to node.
Remember the simple rules
- No correlation Id on the request message: The correlation Id of the response message is the messageId of the request message
- The request message has a correlationId: The correlationId of the response message is the correlationId of the request message.
- Other pass through attributes: priority, expiration, persistence ...
Enjoy
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| JYama |
| Posted: Mon Oct 02, 2006 8:26 pm Post subject: |
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Master
Joined: 27 Mar 2002
Posts: 281
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I'm grateful for your accurate help, fjb_saper.
Thanx,
J |
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